Draught of Lizard Limbs

You regrow a lost limb. Fully 50% of these potions are faulty, growing the wrong limb from the wrong side (such as a second left arm) or growing a leg where an arm should go. Before using this potion, it’s best to establish a good relationship with a barber-surgeon lest the Witch Hunters get wind of your guilty double left-hand secret.[1a][1b]